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What is a Power Flush?

A Power flush is a cleaning process which removes deposits of sludge from a hydronic heating system and should be done every 5 years.

Over time this sludge builds up in your radiator panel, floor heating and your boiler. This mud like substance slowly decreases the efficiency of your system, and in extreme cases can cause blockages, corrosion and damage to your boiler.A Power flush removes it and should be performed every 5 – 6 years.

How do you know you need a Power Flush?

Signs that you need a power flush can include:

Your system is older than 5 years

Your system taking longer to heat your home than it used to

Increase in your running costs

Panels being cold in the middle and hot at the top

The system not heating at all if it becomes blocked

How we perform a power flush?

To conduct a power flush we disconnect the flow and return pipes from the boiler and connect them to our PowerFlush machine. This piece of equipment is made up of a powerful pump and a magnetic filter. We then close of all panels and circuits and flush each one individually so that the full force of the power flush goes through each panel or circuit.

The result of a power flush is that all sludge is now captured with our powerful magnetic filter and all water in your system is fresh. Your system will return to peak efficiency and you will again feel like you have a brand new hydronic heating system.

If you have any questions please write them in the comments section so that we can help you and others with similar questions into the future.

I’ve read that introducing fresh water to the system introduces oxygen, which actually increases oxidation and corrosion. Flushing the system seems to run counter to that notion. Please explain.

Adam Lancaster

Hi Phillip,

You are correct. That is why when a power flush is completed we add a chemical called Fernox Inhibitor. As its name suggests is to inhibit the process of oxidation and therefore corrosion. When we conduct a power flush it includes the cost of the Fernox Inhibitor and an initial chemical to help break up the gunk called Fernox cleaner.